Question

I have to pass some parameter from an action to another action,for example to keep trace of an event.

What is the best way to do that?

I would not use session parameters. Thanks

Answer 1

Assuming you are serverside within one action and wishing to invoke another action with some parameters.

You can use the s:action tag to invoke another action, possibly with additional/other parameters than the original action:

    <s:action name='myAction'  ignoreContextParams='true' executeResult='true'>         <s:param name='foo' value='bar'/>     </s:action> 

You can also use a standard struts-xml result type with a parameter:

<result name='success' type='redirect' >       <param name='location'>foo.jsp?foo=${bar}</param>       <param name='parse'>true</param>       <param name='encode'>true</param>  </result> 

If you want a client side redirect you have to send an url back to the client with the proper parameters, and maybe use some javascript to go there.

        <s:url action='myAction' >             <s:param name='foo' value='bar'/>         </s:url>